摘要
考虑多因素影响进行层系划分时,应用传统的层次分析法计算各因素权重存在着需要专家进行评估打分的严重缺陷。为了更好地通过细分层系实现扩大波及系数和提高原油采收率的目的,针对层次分析法中存在的缺陷,提出了基于熵原理的权重计算方法。将该方法应用于瓦庄油田瓦6块的细分层系,能提高采收率6.3%。应用结果表明,由于熵权算法能够根据区块自身具体的客观条件自动计算各影响因素的权重,因而能够避免人为主观因素的干扰,在该方法基础上进行层系细分最终得到的层系划分与组合方式更加准确、合理,这可用于指导油田现场通过层系细分来提高原油采收率。
In response to theevaluation by experts is hampered by the application of the traditional analytic hierarchy process(AHP) methods,this paper proposed a new approach to calculate the weight of influence factors,based on entropy weight algorithm.Thus,sweep efficiency and oil recovery can be improved.Furthermore,the method was applied in subdivision of layer series of Wa-6 block and oil recovery could be improved by 6.3 percent.The results indicate that entropy weight algorithm can avoid the influence of artificial subjective factors because it can calculate the weight of influence factors automatically according to the objective conditions of the block.Thus,if entropy weight algorithm is used,the results of subdivision of layer series will be more accurate and reasonable.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2010年第3期86-89,共4页
Petroleum Geology and Recovery Efficiency
基金
中国石油化工股份有限公司科研项目"复杂断块低渗透油藏改善开发效果研究"(P08028)
江苏省自然科学基金项目"复杂断块油藏细分层开发提高采收率潜力研究"(BK2008582)
关键词
熵
细分层系
权重计算
聚类分析
模糊综合评判
entropy
subdivision of layer series
weight calculation
cluster analysis
comprehensive fuzzy evaluation